Ethnic Pashtuns claim Pakistani security forces are harassing them during crackdown following terror attacks — an assertion Pakistan denies
Wrangling among leaders could open way for disgruntled Taliban soldiers to embrace Islamic State group, thought to have established itself in Afghanistan
Militant groups, arching from Nigeria to central and southeast Asia, have forged links with IS
Recent attack on Peshawar school reflects brutality of militants under his leadership
Head of private school federation says Nobel Peace Prize winner's book runs counter to tenets of Islam, ideology of Pakistan
